vitamin B12 deficiency


Also found in: Wikipedia.

vitamin B12 deficiency

Megalobalstic anemia, see there.
References in periodicals archive ?
Scant B12 Studies in the elderly link impairments of memory and reasoning with vitamin B12 deficiency.
Possible complications: intestinal obstruction, bleeding, and anemia, perforation of the inflamed bowel, vitamin B12 deficiency, increased susceptibility to cancer of the ileum.
PPIs also may reduce the effectiveness of other drugs used to treat cardiovascular disease and cancer, and can cause vitamin B12 deficiency and kidney failure, according to the petition.
The breakthrough came when doctors discovered last October that Angela had a vitamin B12 deficiency and immediately started her on injections.
Vitamin B12 is found only in animal-based foods, so dietary vitamin B12 deficiency can be a problem in strict vegetarians, who exclude all sources of animal products, such as eggs and dairy products, and/or do not take a B12 supplement or consume sufficient amounts of B12-fortified plant products.
A simple blood test confirmed that the cause of the anaemia was due to a lack of iron, and not some other cause such as vitamin B12 deficiency, low levels of folic acid or diseases of the bone marrow or bowel.
Signs of vitamin B12 deficiency - tiredness due to anaemia, abnormalities of nervous tissue function.
Pernicious anemia, the most common cause of vitamin B12 deficiency, is a chronic, autoimmune illness characterized by the destruction of the gastric mucosa.
Urinary methylmalonic acid/creatinine ratio: a gold standard test for tissue vitamin B12 deficiency [Letter].
Pins and needles that are made worse by flexing the neck are known as Lhermitte's sign and can be caused by a number of underlying problems including nerve abnormalities, arthritis of the neck and vitamin B12 deficiency.
According to the National Institutes of Health, vitamin B12 deficiency can lead to a wide spectrum of conditions, such as anemia, dementia and reduced cognitive functioning.